PERLEPE, Panagiota; OYARZABAL, Itziar; VOIGT, Laura; KUBUS, Mariusz; WOODRUFF, Daniel; REYES-LILLO, Sebastian; AUBREY, Michael; NÉGRIER, Philippe; ROUZIÈRES, Mathieu; WILHELM, Fabrice; ROGALEV, Andrei; NEATON, Jeffrey; LONG, Jeffrey; MATHONIÈRE, Corine; VIGNOLLE, Baptiste; PEDERSEN, Kasper; CLÉRAC, Rodolphe

doi:10.1038/s41467-022-33342-5

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PERLEPE, Panagiota
Centre de Recherche Paul Pascal [CRPP]
Institut de Chimie de la Matière Condensée de Bordeaux [ICMCB]

OYARZABAL, Itziar
Centre de Recherche Paul Pascal [CRPP]
BCMaterials Edificio [Derio, Espagne]

VOIGT, Laura
Department of Chemistry

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Article de revue

Ce document a été publié dans

Nature Communications. 2022, vol. 13, p. 5766

Nature Publishing Group

Résumé en anglais

Electronic synergy between metal ions and organic linkers is a key to engineering molecule-based materials with a high electrical conductivity and, ultimately, metallicity. To enhance conductivity in metal-organic solids, chemists aim to bring the electrochemical potentials of the constituent metal ions and bridging organic ligands closer in a quest to obtain metal- d and ligand- π admixed frontier bands. Herein, we demonstrate the critical role of the metal ion in tuning the electronic ground state of such materials. While VCl 2 (pyrazine) 2 is an electrical insulator, TiCl 2 (pyrazine) 2 displays the highest room-temperature electronic conductivity (5.3 S cm –1 ) for any metal-organic solid involving octahedrally coordinated metal ions. Notably, TiCl 2 (pyrazine) 2 exhibits Pauli paramagnetism consistent with the specific heat, supporting the existence of a Fermi liquid state (i.e., a correlated metal). This result widens perspectives for designing molecule-based systems with strong metal-ligand covalency and electronic correlations.< Réduire

DOI

http://dx.doi.org/10.1038/s41467-022-33342-5

Project ANR

Aimants 2D conducteurs à haute performance obtenus par une approche Chimie de coordination redox

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Importé de hal

Unités de recherche

Laboratoire Ondes et Matière d'Aquitaine (LOMA) - UMR 5798